井震匹配性分析在老油田储层预测中的应用——以大庆长垣油田北部区块密井网区为例  

The Application of Logging-seismic Matching for Reservoir Prediction in Old Oilfields

作　　者：梁宇 

机构地区：[1]中石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《长江大学学报（自然科学版）》2018年第19期26-30,共5页Journal of Yangtze University(Natural Science Edition)

基　　金：国家科技重大专项(2011ZX05010-001)

摘　　要：测井资料和地震资料是油田勘探开发过程中两种最基本的原始资料,在储层预测等精细油藏描述中发挥着重要作用,但由于二者采集的时间、方法及分辨率不同,导致反映的储层信息不一致,造成了储层预测及描述的多解性,影响剩余油开发效果。为此,系统分析了大庆长垣油田北部区块密井网区影响井震匹配性的因素,针对性地提出了地震重采样、测井曲线标准化和趋势约束层位解释技术等解决方案,有效提高了测井与地震资料的空间匹配程度,并在大庆长垣油田北部区块萨尔图油层密井网约束反演储层预测中进行了实际应用,厚度2m以上河道砂体预测符合率达到了80%以上,取得了较好的应用效果。Logging data and seismic data were the two most basic raw data in oilfield exploration and development,they played an important role in fine reservoir description,such as reservoir prediction.However,due to the difference of acquisition time,method and resolution between them,the reservoir information reflected by them was not consistent,which resulted in the multi-solution of reservoir prediction and description,and affected the development effect of remaining oil.Dense well pattern constraint seismic inversion is one of core technology to predict interwell reservoir change,which can show 3 Dreservoir geological model,reflecting the characteristics of the reservoir sand body vertically and horizontally.Well logging and seismic data are the most basic raw materials in the process of oilfield exploration and development,which play an important role in dense well pattern constraint seismic inversion.Because seismic data and well logging acquisition time,method and resolving power are different.Therefore,factors affecting well-seismic matching are analyzed systematically in the dense well patterns in the north of Daqing Changyuan Oilfield,some solutions,such as seismic resampling,logging curve standardization and trend constrained horizon interpretation,are put forward,the spatial matching degree of logging and seismic data is improved effective-ly.The method is used for dense well pattern constraining seismic inversion in Saertu reservoir in the north of Changyuan Oilfield.The prediction coincidence rate of sand body over 2 min thickness is over 80%,and good application effect is obtained.

关 键 词：密井网 井震匹配性 地震反演 

分 类 号：P631.44[天文地球—地质矿产勘探]